Piggy Bank
Algebra
Level
1
Peter has six times as many dimes as quarters in her piggy bank. She has 21 coins in her piggy bank totaling $2.55
How many of each type of coin does she have?
5 quarters and 15 dimes
3 quarters and 12 dimes
5 quarters and 14 dimes
3 quarters and 18 dimes
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1 solution
So, you know she had six times as many dimes as quarters in her piggy bank. This means she has 6 x dimes and x quarters. The total amount of coins she has is 6 x + x , or 7 x . The problem states that she has 21 coins, so 7 x = 2 1 . Solving, you find x = 3 . This means she has 3 q u a r t e r s a n d 1 8 d i m e s .